package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

  @Autowired
  private EmployeeMapper employeeMapper;

  /**
   * 员工登录
   *
   * @param employeeLoginDTO
   * @return
   */
  public Employee login(EmployeeLoginDTO employeeLoginDTO) {
    String username = employeeLoginDTO.getUsername();
    String password = employeeLoginDTO.getPassword();

    //1、根据用户名查询数据库中的数据
    Employee employee = employeeMapper.getByUsername(username);

    //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
    if (employee == null) {
      //账号不存在
      throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
    }

    //密码比对
    // 使用springframework的工具类进行密码加密后对比
    password = DigestUtils.md5DigestAsHex(password.getBytes());
    if (!password.equals(employee.getPassword())) {
      //密码错误
      throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
    }

    if (employee.getStatus() == StatusConstant.DISABLE) {
      //账号被锁定
      throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
    }

    //3、返回实体对象
    return employee;
  }

  @Override
  public void save(EmployeeDTO employeeDTO) {
    // 传给mapper的需要是实体类，而不是DTO，把DTO的数据拷贝给实体
    Employee employee = new Employee();
    // 拷贝DTO的属性到实体
    BeanUtils.copyProperties(employeeDTO, employee);
    // 再设置需要设置的属性
    employee.setStatus(StatusConstant.ENABLE);
    employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

    // 通过AutoFillAspect切面已经给公共属性赋值了
    /*employee.setCreateTime(LocalDateTime.now());
    employee.setUpdateTime(LocalDateTime.now());
    // 设置当前记录创建人和修改人
    Long currentId = BaseContext.getCurrentId();
    employee.setCreateUser(currentId);
    employee.setUpdateUser(currentId);*/

    employeeMapper.insert(employee);

  }

  @Override
  public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
    int page = employeePageQueryDTO.getPage();
    int pageSize = employeePageQueryDTO.getPageSize();
    String name = employeePageQueryDTO.getName();
    PageHelper.startPage(page,pageSize);
    PageResult pageResult = new PageResult();

    Page<Employee> list = employeeMapper.page(name);
    long total = list.getTotal();
    List<Employee> result = list.getResult();
    pageResult.setTotal(total);
    pageResult.setRecords(result);
    return pageResult;
  }

  @Override
  public void startOrStop(Integer status, Long id) {
    Employee employee = Employee.builder().id(id).status(status).build();
    employeeMapper.update(employee);
  }

  @Override
  public Employee getEmployeeById(Long id) {
    Employee employee = employeeMapper.getEmployeeById(id);
    employee.setPassword("****");
    return employee;
  }

  /**
   * 修改员工
   * @param employeeDTO
   */
  @Override
  public void updateEmployee(EmployeeDTO employeeDTO) {
    Employee employee = new Employee();
    BeanUtils.copyProperties(employeeDTO, employee); // 拷贝对象属性：把DTO的属性拷贝到实体

    // 通过AutoFillAspect切面已经给公共属性赋值了
    /*employee.setUpdateTime(LocalDateTime.now()); // 设置修改实际
    employee.setUpdateUser(BaseContext.getCurrentId()); // 设置修改人：从线程中获取jwt中解析出来的id*/

    employeeMapper.update(employee);
  }

}
